Continuous Delivery is one of the most valuable approaches to software development to emerge in recent years. At its core, Continuous Delivery is a set of practices and disciplines that enable organizations to reach and maintain a high-speed, predictable, steady, and safe stream of valuable software changes irrespective of the kind of software being developed. Continuous Delivery works not just for web-based software, but also mobile apps, on-premise hosted desktop software, device firmware, and so on.
In 2010, Jez Humble and Dave Farley wrote the book Continuous Delivery[HumbleFarley] based on their experiences building and releasing software for clients around the world. Their book is a hugely valuable collection of techniques, advice, and suggestions for software delivery and provides the de facto definition of Continuous Delivery.
What Continuous Delivery Is Not
Many people confuse Continuous Delivery with Continuous Deployment, but the two are quite different in purpose and execution. As seen in Figure 1-1, Continuous Delivery aims to enable regular, rapid, reliable software releases through a set of sound practices, giving the people who “own” the software product the power to decide when to release changes. Continuous Delivery is a so-called pull-based approach, because software is “pulled” through the delivery mechanism when needed, and applies to all kinds of software (web, desktop, embedded, etc.).
Figure 1-1. Continuous ...
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